NOTE: The assumption here is that you already have Gmail Label Share chrome extension installed and you have a shared label

Here are short instructions on how you can view shared notes on emails in shared label in Gmail preview:

  1. Check that Gmail Labs widget “Preview Pane” is enabled. Please go to Gmail -> Settings -> Labs and enable the “Preview Pane” widget:
    Preview Pane
  2. Click your shared label to see all shared emails:
    Open label
  3. Choose whether you want messages in horizontal or vertical preview:
    Preview Pane
  4. Click the email you want to preview and you should be able to see shared comments on the rightmost side of message:

    Horizontal preview:
    Preview Pane

    Vertical preview:
    Preview Pane